// 先导入getLodop方法
import {
  getLodop
} from "./LodopFuncs.js";

const promisic = function(func) {
  return function(params = {}) {
    return new Promise((resolve, reject) => {
      const args = Object.assign(params, {
        success: (res) => {
          resolve(res);
        },
        fail: (error) => {
          reject(error);
        }
      });
      func(args);
    });
  };
};
// 打印类属性、方法定义
/* eslint-disable */
const Print = function(dom, options) {
  if (!(this instanceof Print)) return new Print(dom, options);
  this.options = this.extend({
    'noPrint': '.no-print'
  }, options);
  console.log(options,'options')
  this.isShowPrint = options.isShowPrint;
  if(Number.isInteger(options.awaitTime)){
    this.awaitIndex = options.awaitTime*2;
  }else{
    this.awaitIndex = 60;
  }
  if ((typeof dom) === "string") {
    this.dom = document.querySelector(dom);
  } else {
    this.isDOM(dom)
    this.dom = this.isDOM(dom) ? dom : dom.$el;
  }
  var content = this.getStyle() + this.getHtml();
  return this.printByAuto(content);
};


Print.prototype = {
  init: function() {

  },
  extend: function(obj, obj2) {
    for (var k in obj2) {
      obj[k] = obj2[k];
    }
    return obj;
  },

  getStyle: function() {
    var str = "",
        styles = document.querySelectorAll('style,link');
    for (var i = 0; i < styles.length; i++) {
      str += styles[i].outerHTML;
    }
    str += "<style>" + (this.options.noPrint ? this.options.noPrint : '.no-print') + "{display:none;}</style>";

    return str;
  },

  getHtml: function() {
    var inputs = document.querySelectorAll('input');
    var textareas = document.querySelectorAll('textarea');
    var selects = document.querySelectorAll('select');

    for (var k = 0; k < inputs.length; k++) {
      if (inputs[k].type == "checkbox" || inputs[k].type == "radio") {
        if (inputs[k].checked == true) {
          inputs[k].setAttribute('checked', "checked")
        } else {
          inputs[k].removeAttribute('checked')
        }
      } else if (inputs[k].type == "text") {
        inputs[k].setAttribute('value', inputs[k].value)
      } else {
        inputs[k].setAttribute('value', inputs[k].value)
      }
    }

    for (var k2 = 0; k2 < textareas.length; k2++) {
      if (textareas[k2].type == 'textarea') {
        textareas[k2].innerHTML = textareas[k2].value
      }
    }

    for (var k3 = 0; k3 < selects.length; k3++) {
      if (selects[k3].type == 'select-one') {
        var child = selects[k3].children;
        for (var i in child) {
          if (child[i].tagName == 'OPTION') {
            if (child[i].selected == true) {
              child[i].setAttribute('selected', "selected")
            } else {
              child[i].removeAttribute('selected')
            }
          }
        }
      }
    }
    // 包裹要打印的元素
    // fix: https://github.com/xyl66/vuePlugs_printjs/issues/36
    let outerHTML = this.wrapperRefDom(this.dom).outerHTML
    return outerHTML;
  },
  // 向父级元素循环，包裹当前需要打印的元素
  // 防止根级别开头的 css 选择器不生效
  wrapperRefDom: function(refDom) {
    let prevDom = null
    let currDom = refDom
    // 判断当前元素是否在 body 中，不在文档中则直接返回该节点
    if (!this.isInBody(currDom)) return currDom

    while (currDom) {
      if (prevDom) {
        let element = currDom.cloneNode(false)
        element.appendChild(prevDom)
        prevDom = element
      } else {
        prevDom = currDom.cloneNode(true)
      }

      currDom = currDom.parentElement
    }

    return prevDom
  },

  writeIframe: function(content) {
    var w, doc, iframe = document.createElement('iframe'),
        f = document.body.appendChild(iframe);
    iframe.id = "myIframe";
    //iframe.style = "position:absolute;width:0;height:0;top:-10px;left:-10px;";
    iframe.setAttribute('style', 'position:absolute;width:0;height:0;top:-10px;left:-10px;');
    w = f.contentWindow || f.contentDocument;
    doc = f.contentDocument || f.contentWindow.document;
    doc.open();
    doc.write(content);
    doc.close();
    var _this = this
    iframe.onload = function() {
      _this.toPrint(w);
      setTimeout(function() {
        document.body.removeChild(iframe)
      }, 100)
    }
  },

  toPrint: function(frameWindow) {
    try {
      setTimeout(function() {
        frameWindow.focus();
        try {
          if (!frameWindow.document.execCommand('print', false, null)) {
            frameWindow.print();
          }
        } catch (e) {
          frameWindow.print();
        }
        frameWindow.close();
      }, 10);
    } catch (err) {
      console.log('err', err);
    }
  },
  printByAuto(content) { //这个是打印代码
    var self = this
    return new Promise(function(resolve, reject) {
      var timeIndex = 0;
      let LODOP = getLodop() //主要代码
      var w, doc, iframe = document.createElement('iframe'),
          f = document.body.appendChild(iframe);
      iframe.id = "myIframe";
      //iframe.style = "position:absolute;width:0;height:0;top:-10px;left:-10px;";
      iframe.setAttribute('style', 'position:absolute;width:0;height:0;top:-10px;left:-10px;');
      w = f.contentWindow || f.contentDocument;
      doc = f.contentDocument || f.contentWindow.document;
      doc.open();
      doc.write(content);
      doc.close();

      LODOP.PRINT_INIT()
      LODOP.SET_PRINT_PAGESIZE(3, 0, 0,'A4')
      LODOP.ADD_PRINT_HTM(
          0, 0, '100%',
          '100%',
          content //获取要打印部分html
      )
      //以上为声明打印参数，具体请参照官网示例
      //PRINT指令不再返回那个所谓“打印成功”
      LODOP.SET_PRINT_MODE('CATCH_PRINT_STATUS', true)
      if (LODOP.CVERSION) {
        //判断c_lodop是否存在，安装了c-lodop就会存在
        LODOP.On_Return = function(TaskID, Value) {
          //value true为打印成功
          var timer = setInterval(function() {
            timeIndex += 1;
            if (self.printStatus == 1 || self.printStatus) {
              clearInterval(timer);
              self.printStatus = 1;
              resolve(1);
            }
            //预计等待实际30秒
            if (timeIndex > self.awaitIndex) {
              clearInterval(timer);
              self.printStatus = 0;
              resolve(0);
            }
            // PRINT_STATUS_BUSY
            self.getStatusValue(Value); //查询打印任务完成状态
          }, 500);
        }
        console.log(self.isShowPrint,'self.isShowPrint')
        if(self.isShowPrint){
          LODOP.PREVIEW() //这是有预览打印
        }else{
          LODOP.PRINT() //这是执行打印（无预览）
        }
      } else {
        resolve(0);
      }
    })
  },
  getStatusValue: function(job) { //根据job代码，获取是否打印成功 检查是否还在队列 1还在队列 0可能已打完或未打而删除
    var self = this;
    LODOP.On_Return = function(TaskID, Value) {
      // console.log("TaskID:" + TaskID);
      console.log("打印成功状态:" + Value); //打印成功状态
      if(Value != '' && Value!=undefined && Value!=undefined){
        let newValue = parseInt(Value);
        if(newValue == 0){
          self.printStatus = 1;
        }
        if(newValue == 1){
          self.printStatus = 0;
        }
      }
    };
    // console.log(job, 'job')
    LODOP.GET_VALUE("PRINT_STATUS_EXIST", job);
  },
  // 检查一个元素是否是 body 元素的后代元素且非 body 元素本身
  isInBody: function(node) {
    return (node === document.body) ? false : document.body.contains(node);
  },
  isDOM: (typeof HTMLElement === 'object') ?
      function(obj) {
        return obj instanceof HTMLElement;
      } : function(obj) {
        return obj && typeof obj === 'object' && obj.nodeType === 1 && typeof obj.nodeName === 'string';
      }
};
const MyPlugin = {}
MyPlugin.install = function(Vue, options) {
  // 4. 添加实例方法
  Vue.prototype.$printMeAuto = Print
}
export default MyPlugin
